Install ImageMagick in deploy workflow

Author: DuoZhangRobotics

.github/workflows/deploy.yml

@@ -81,6 +81,7 @@ jobs:
           value: ${{ github.repository }}
       - name: Install and Build 🔧
         run: |
+          sudo apt-get update && sudo apt-get install -y imagemagick 
           pip3 install --upgrade jupyter
           export JEKYLL_ENV=production
           bundle exec jekyll build